Combination-lock.



No. 864,395. PATENTBD AUG.`27, 1907. VAN'. Toms.v

coMBINATroN LocK.

PPLIQATION FILED SEPT. 20,1906.

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IMM 1 VW JEH" No. 864.395. PATENTED AUG. 27, 1.907. N. ToBIAs.coMBINATI'oN Loox.

y APPLICATION FILED SBF120. 1906.

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NEUMAN TOBIAS, 'OF KINGSTON, JAMAICA.

COMBINATION-Loox.

To a-ZZ whom it may concern:

Bo it known that I, NEUMAN ToBIAs, a subject of the King oi GreatBritain, residing at-Kingston, in the 4Islandoi: Jamaica, West Indies,have invented certain new and useful Improvements in Combination-Locks,oi which the following is a full, clear, and Vexact description. f v

' My invention relates tocombination locks, and particularly to thosehaving means by which the combination can be readily changed;lv v

The principal object of the/invention is to'provide a lock o1 thegeneral character' stated above, and in which a plurality of notcheddisks are rotatably arranged on the same axis, so that each disk may beadjusted with respect to its registering means.

With this and other objects in view, the invention consists in thefeatures of construction hereinafter set orth and claimed.

In the drawings'. Figure 1 is a sectional view showing a door lockembodying the principles of my invention; Fig. 2 is a section on theline II-II of Fig. 1, looking in the direction of the arrow; Fig. 3 is afront View o a door having the lock applied thereto; Fig. 4 is an edgeview of the door; Fig. 5 is a detail view showing the index disks bywhich the combination lock is operated; Fig. 6 is a detail view of oneof the notched disks on its supporting core; Fig. 7 is a view of anothernotched disk on its supporting tube.

In carrying out the invention I make use of a plurality ofconcentrically arranged tubes which iit within one another so as to be'freely-rotatable. Each tube has separate registering means by which itsangular position is determined, and also a notched or crowned extremity,the purpose of which is to enable the combination to be changed, as willhereinafter more fully appear.

Referring to the drawings in which like parts are designated by the samereference sign, l indicates broadly a door latch, having a casing 2, anda bolt 3, guided within the casing to have a to and iro move- 4indicates a spring by which the bolt is normally impelled into lockingrelation. i

I provide means by which the bolt is always freely withdrawable lrom oneside of the latch, and by which it can only be moved from the outsideunder certain circumstances. For this purpose the bolt has a plate 5,guided to have a slight independent longitudinal movement thereon, byvirtue of the studs 6, projecting into the slots 7, of the bolt. Byvirtue of this construction Lthe bolt may be withdrawn whenever theplate 5 is moved rearwardly, but the bolt may always have a rearwardmovement independently of the plate to unlock the door in case the plateshould be locked against movement. i

specification of Letters retenu. Application led September 20,1906;Serial No. 335,351.

Patented Aug. 27, 1907.

l0 designates a pivoted detent lever normally 'im- `pelled away from theplate 5 by a spring 11. The lplate 5 has a notch 12, into which thedetent 10 may be xmoved to resist movement ofthe plate.

: As illustrated in the drawing the combination lock` devices arearranged to hold the detent 10 in the notch y12 against the tensionofthe spring l1, until the correct combination has been set. For thispurpose the casing- 2 is provided with an opening and has a stationarydisk 2l inserted and fixed therein in which is a comparatively largeaperture 13, in which is revolubly supported the largest one oi theseries of concentric or nested tubes above mentioned. These tubes areindicated by the characters 14, 14, 14C, 14d.l Within the tube 14d thereis a central solid core or shat 14e, although this may be also tubularif desired. While I have shown this particular number and arrangement otubes, it is evident that this is immaterial. Each of the tub es and thecentral core or spindle 14e has a separate index wheel or disk,designated respectively l5, 15b, 15G, 15d, and 15e. These index wheelsor disks occupy a convenient position on the outside of the casing, andare preferably diferent in size, so that they may conveniently beAregistered with one another in order to set the combination. The otherend of each of the tubes 14, 14h, 14", 14d, and also the central core orspindle 14", are notched or crowned with radial notches 16, of whichthere may be as many as desired, for example, twenty-six in each tube,corresponding to the letters of the alphabet.

17, 17h, 17", 17d, and 17e designate a series of disks each havingaknotch 18, and a central hole corresponding respectively to the sizesof the respective tubes and the central core 14e. Each of these disksalso has a key 19 adapted to enter the notches 16 above mentioned. It isevident that each disk may be positioned in this way in any desiredrelation to its index wheel 15.

20 indicates a cap threaded on to a stud 21 on the central core orspindle 14e, and 22 is a cotter pin to hold this cap in place.

The Various notched disks being all assembled on their supporting tubes,it is evident that they may be independently rotated to any desiredposition by manipulating the' exterior index wheels 15a, 15b, 15 and15d. When the notches are all brought beneath the detent lever 10, thelatter moves away from the plate 5 under the influence of its impellingspring ll, and thereafter the plate 5 and therewith the bolt 3 arefreely movable from the exterior knob 9 of the door. Whenever it isdesired to reset the combination this is readily accomplished by movingthe pin 22'and the cap 20 and 1re-positioning the notched disks on thecrowned ends of the various tubes 14, 14h, 140, etc., and the centralcore or shaft 14e.

What I claim, is:-

1. In a combination lock, a bolt sprng-impelled into closing relationand having slots therein, a plate having a fiat face in contact withsaid bolt and having studs engaging the slots of the bolt, whereby saidbolt is guided on the plate, means for guiding said plate to move in arectilinear path, separate door knobs having means engaging said plateand said bolt respectively and a detent for locking said plate wherebythe plate is prevented from movement without preventing the movement ofthe holt.

2. In a combination lock, a bolt spring-impelled into closing relationand having slots therein, a plate having a flat face in contact withsaid bolt and having studs engaging the slots of the bolt whereby saidbolt is guided on the plate, means for guiding said plate to move in arectilinear t path, separate door knobs having means engaging said saidstuds andguded by the plate, a blade spring fixed at one end to thecasing and hearing on said bolt to normally press the same into lockingrelation, separate door knobs having means engaging said plate and saidbolt respectively, a detent lever movable into engagement with saidplate and spring-impelled away from the same, and plurality of notcheddisks to .prevent such movement of said detent except when the notchesof the disks are moved in proper alinement with one another.

4. In a combination lock, a casing, a plate and a bolt guided to haveseparate: movements parallel to one another, separate door knobs'adaptedto move said plate and said bolt, said plate also having means formoving said holt, a detent engaging said plate, a series of concentrictubes revoluble within one another, each of which has a notched orcrowned end, and a plurality of notched disks each having a key tocoperate with the crowned ends of said tubes, said notched disks beingadapted to rest against said detent.

5. In a combination lock, a bolt spring impelled into closing relation,a plate guided adjacent to said bolt, said plate being adapted to movesaid bolt, door knobs having separate means for displacing said plateand said bolt, a detent pivoted to engage said plate and a series ofnotched disks adapted to be moved into relation to resist displacementof said detent.

ln witness whereof, I subscribe my signature, in presg ence of twowitnesses.

